114mm R780 gread Steel Double Wall Drill Pipe 6000mm Length
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102mm High Steel Double Wall Drill Pipe Reverse Circulation 6000mm Longth Manufacture of RC drill pipe/114mm reverse circulation drill pipe/double wall drill pipe Product Description: 114mm R780 gread Steel Double Wall Drill Pipe 6000mm Length The double wall drill pipe is a full hole drilling tool, and the hole wall clearance is small, so there is no space condition for collapse of broken rock blocks. The double wall drill pipe......
Langfang Baiwei Drill Co., Ltd.
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102mm Reverse Circulation RC Hardened Drill Bits For Mining Well Drilling
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... air to provide continuous return of formation and water samples. Cuttings and formation waters are not contaminated with drilling additives or mixed with other borehole material. The RC method employs dual wall drill rods that comprise an outer drill rod,...
Changsha Sollroc Engineering Equipments Co., Ltd
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